L'énoncé
Utilisez un brouillon et vérifiez ensuite votre réponse
Question 1
Développez \(A =4(6x-5)\)
\(A = 24x -20\)
Question 2
Développez \(B=-4(-2x+7)\)
\(B = 8x-28\)
Question 3
Développez \(C = (8x+5)\times (-4)\)
\(C = -32x -20\)
Question 4
Développez \(D = -6(x+6) +3(3x -5)\)
\(D = -6x-36+9x-15\)
\(D = 3x-51\)
Question 5
Développez \(E = 3x -8(1-5x) \)
\(E = 3x-8+40x\)
\(E = 43x-8\)
Question 6
Développez \(F = 3x-5(9-3x)\)
\(F = 3x-45+15x\)
\(F =18x-45\)
Question 7
Développez \(G = -(5x-7)+(6-4x)\times (-2)\)
\(G = -5x+7-12+8x\)
\(G = 3x-5\)
Question 8
Développez \(H = -\dfrac{1}{3}\left(4x-\dfrac{3}{5}\right)\)
\(H = -\dfrac{4}{3}x+\dfrac{1\times 3}{3\times 5}\)
\(H = -\dfrac{4}{3}x+\dfrac{1}{5}\)
Question 9
Développez \(I = (3x-4)\times\left(\dfrac{-3}{4}\right)\)
\(I = (3x-4)\times\left(\dfrac{-3}{4}\right)\)
\(I = -\dfrac{9}{4}x+\dfrac{4\times 3}{4}\)
\(I = -\dfrac{9}{4}x+3\)
Question 10
Développez \(J = 5\left(x-\dfrac{2}{15}\right)\times (-4)\)
\(J = 5\times (-4)\times\left(x-\dfrac{2}{15}\right)\)
\(J =-20\left(x-\dfrac{2}{15}\right)\)
\(J =-20x+\dfrac{40}{15}\)
\(J =-20x+\dfrac{8\times 5}{3\times 5}\)
\(J =-20x+\dfrac{8}{3}\)